Telephone

Details Telephone Telephone

1982-01-29

1984-08-28

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D21111

Patent

active

D02752808

REFERENCES:
patent: D133539 (1942-08-01), Dow
patent: D250023 (1978-10-01), Thomas
patent: D260018 (1981-07-01), Thomas
patent: D260260 (1981-08-01), Thomas
patent: 4087650 (1978-05-01), Tucker

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